ライフサイエンスコーパス: sulfur isotope

1 voked to avoid spectral interferences on the sulfur isotopes.

2 nd secondary ion mass spectrometry (SIMS) of sulfur isotopes ((32)S, (33)S, and (34)S), we examined d

3 otope record that includes the less abundant sulfur isotope 33S.

4 llular levels, tracking the fate of a stable sulfur isotope ((34)S) from its incorporation by microal

5 bacteria labeled metabolically with a stable sulfur isotope (34SO 4 2-).

6 We used stable carbon, nitrogen, and sulfur isotope analyses of archaeological bones and hist

7 and delta18O in SO4, with the possibility of sulfur isotope analysis on the same sample.

8 Sulfur isotope anomalies and marked decreases in ice cor

9 luorinating agent is needed, both oxygen and sulfur isotopes can be measured on the same sample, only

10 The Mount McRae record of sulfur isotopes captures the widespread and possibly per

11 carbon) values but variable delta(34)S(CAS) (sulfur isotope composition of carbonate-associated sulfa

12 Sulfur isotope composition of DMS analyzed in freshly co

13 (CF-IRMS) for the rapid determination of the sulfur isotope composition of sulfide and sulfate minera

14 Multiple sulfur isotope compositions (delta(33)S, delta(34)S, and

15 We show that the sulfur isotope compositions (delta(34)S) of DMSP are dep

16 The range of mass-independent sulfur isotope compositions may reflect spatial or tempo

17 we report measurements of the abundance and sulfur isotope compositions of DMSP from one phytoplankt

18 A continuous seawater sulfate sulfur isotope curve for the Cenozoic with a resolution

19 Sulfur isotope data compiled from the same stratigraphic

20 Taking into account evidence from sulfur isotope data for Archean to early Proterozoic sur

21 We present bulk, microdrilled, and ion probe sulfur isotope data from carbonate-associated pyrite in

22 Here, we present multiple sulfur isotope data implying that the sulfur in Archean

23 present coupled high-resolution carbon- and sulfur-isotope data from four European OAE 2 sections sp

24 The anomalous sulfur isotope (Delta(33)S) signature of pyrite (FeS2) i

25 0 degrees C possess anomalously fractionated sulfur isotopes: Delta33S = +0.1 to +2.1 per mil and Del

26 The magnitude of the sulfur isotope effect is similar in red blood cells and

27 Sulfur isotope effects were larger in enzymatic (epsilon

28 Sulfur isotope evidence from sedimentary pyrites reveals

29 ing of organic-carbon and pyrite burial, the sulfur-isotope excursion can be generated by transiently

30 other sedimentary environments (for example, sulfur isotope fractionation above 60 per thousand in su

31 We present a quantitative model for sulfur isotope fractionation accompanying bacterial and

32 apparent asymmetry in the magnitude of minor sulfur isotope fractionation in Archean sediments remain

33 Therefore, similar magnitudes of sulfur isotope fractionation in sedimentary rocks do not

34 Although sulfur isotope fractionation is a phenotypic trait that

35 The minor extent of sulfur isotope fractionation preserved in many Neoarchea

36 ronmental sulfate and sulfide levels control sulfur isotope fractionation through the proximate influ

37 that incorporates O(2)-dependent carbon and sulfur isotope fractionation using data obtained from la

38 veal significant degrees of mass-independent sulfur isotope fractionation.

39 e Archean ocean, we find large (>20 per mil) sulfur isotope fractionations between sulfate and sulfid

40 te the translation of modern measurements of sulfur isotope fractionations into estimates of Archean

41 find a strong relationship between observed sulfur isotope fractionations over the last 200 Ma and t

42 Mass-independent sulfur isotope fractionations were observed along with h

43 craton, Botswana, preserve mass-independent sulfur isotope fractionations.

44 Sulfur isotopes in ancient sediments provide a record of

45 Anomalously fractionated sulfur isotopes in many sedimentary rocks older than 2.4

46 The composition of sulfur isotopes in sedimentary sulfides and sulfates tra

47 ic compositions of three major constituents: sulfur isotopes in sulfate (delta(34)SSO4), carbon isoto

48 d provides access to previously inaccessible sulfur isotope-labeled substrates for sulfur kinetic iso

49 Here we present a carbon and sulfur isotope mass balance model for the latest Cambria

50 hold represents an estimated upper limit for sulfur isotope mass-independent fractionation (S-MIF), a

51 In situ sulfur isotope measurements from individual microfossils

52 these rocks, we performed microscale in situ sulfur isotope measurements of the preserved organic sul

53 Sulfur isotope measurements offer comprehensive informat

54 We report the production of large sulfur isotope MIF, with Delta(33)S up to 78 per thousan

55 Here, we present a study of the four sulfur isotopes obtained using secondary ion MS that see

56 ar relative change between the oxygen versus sulfur isotopes of sulfate in all experiments (with and

57 and its associated (and analytically useful) sulfur isotope peaks.

58 e a simple, sensitive, and robust method for sulfur isotope ratio ((34)S/(32)S) analysis of ppm-level

59 f oceanic DMS to aerosols we established the sulfur isotope ratios ((34)S/(32)S ratio, delta(34)S) of

60 degradation of dibenzothiophenes, and stable sulfur isotope ratios for elemental sulfur and sulfate i

61 Intramolecular carbon, hydrogen, and sulfur isotope ratios were measured on a homologous seri

62 ect recorded in biomarkers (e.g., carbon and sulfur isotope ratios) have allowed scientists to sugges

63 However, it is clear from the sulfur isotope record and other geochemical proxies that

64 If so, the sulfur isotope record of sedimentary rocks may be linked

65 It is puzzling, therefore, that the sulfur isotope record of the Neoarchean is characterized

66 a number of features seen in the Neoarchean sulfur isotope record.

67 redox-controlled (Fe-speciation) carbon- and sulfur-isotope record reveals sustained systematic strat

68 rlooked depositional controls on sedimentary sulfur isotope records, especially associated with inter

69 Mass-independent fractionation of sulfur isotopes (reported as Delta(33)S) recorded in Arc

70 Mass-independent fractionation of sulfur isotopes (S MIF) in Archean and Paleoproterozoic

71 Mass-independent fractionation of sulfur isotopes (S-MIF) results from photochemical react

72 nts with only three free parameters: (i) the sulfur isotope selectivity of sulfate uptake into the cy

73 The correlation of the time-series sulfur isotope signals in northwestern Australia with eq

74 ile the comparison of simulated and measured sulfur isotope signatures acted as additional calibratio

75 hermal solutions may have produced anomalous sulfur isotope signatures in some sedimentary rocks.

76 e striking mass-independent fractionation of sulfur isotopes that took place in the Archean atmospher

77 processes should be considered in the use of sulfur isotopes to study the onset and consequences of m

78 magnitude of fractionations of the multiple sulfur isotopes to the rate of microbial sulfate reducti

79 mental data contrasts strongly with multiple sulfur isotope trends in Archean samples, which exhibit

80 The results show good precision and reveal sulfur isotope variability between individual OSCs that

81 gnitude for carbon isotopes precedes that of sulfur isotopes with an estimated offset of a few hundre